#include <linux/delay.h>
#include <linux/module.h>
#include "nuc970_cap.h"

static struct nuvoton_vin_sensor ov5640;

struct OV_RegValue{
	__u16	uRegAddr;
	__u8	uValue;
};

#define _REG_TABLE_SIZE(nTableName)	sizeof(nTableName)/sizeof(struct OV_RegValue)

static struct OV_RegValue Init_RegValue[] = 
{	
  	{0x3103, 0x11},{0x3008, 0x82},{0x3008, 0x42},{0x3103, 0x03},{0x3017, 0xff},
	{0x3018, 0xff},{0x3034, 0x1a},{0x3035, 0x11},{0x3036, 0x46},
	{0x3037, 0x03},  //PLL div=1,2,3,4,6,8
	{0x3108, 0x01},{0x3630, 0x2e},{0x3632, 0xe2},{0x3633, 0x23},{0x3621, 0xe0},
	{0x3704, 0xa0},{0x3703, 0x5a},{0x3715, 0x78},{0x3717, 0x01},{0x370b, 0x60},
	{0x3705, 0x1a},{0x3905, 0x02},{0x3906, 0x10},{0x3901, 0x0a},{0x3731, 0x12},
	{0x3600, 0x08},{0x3601, 0x33},{0x302d, 0x60},{0x3620, 0x52},{0x371b, 0x20},
	{0x471c, 0x50},{0x3a18, 0x00},{0x3a19, 0xf8},{0x3635, 0x1c},{0x3634, 0x40},
	{0x3622, 0x01},{0x3c01, 0x34},{0x3c04, 0x28},{0x3c05, 0x98},{0x3c06, 0x00},
	{0x3c07, 0x08},{0x3c08, 0x00},{0x3c09, 0x1c},{0x3c0a, 0x9c},{0x3c0b, 0x40},
	{0x3820, 0x41},{0x3821, 0x07},{0x3814, 0x31},{0x3815, 0x31},{0x3800, 0x00},
	{0x3801, 0x00},{0x3802, 0x00},{0x3803, 0x04},{0x3804, 0x0a},{0x3805, 0x3f},
	{0x3806, 0x07},{0x3807, 0x9b},{0x3808, 0x02}, // width
	{0x3809, 0x80},{0x380a, 0x01}, // height
	{0x380b, 0xe0},{0x380c, 0x07},{0x380d, 0x68},{0x380e, 0x03},{0x380f, 0xd8},
	{0x3810, 0x00},{0x3811, 0x10},{0x3812, 0x00},{0x3813, 0x06},{0x3618, 0x00},
	{0x3612, 0x29},{0x3708, 0x62},{0x3709, 0x52},{0x370c, 0x03},{0x3a02, 0x03},
	{0x3a03, 0xd8},{0x3a08, 0x01},{0x3a09, 0x27},{0x3a0a, 0x00},{0x3a0b, 0xf6},
	{0x3a0e, 0x03},{0x3a0d, 0x04},{0x3a14, 0x03},{0x3a15, 0xd8},{0x4001, 0x02},
	{0x4004, 0x02},{0x3000, 0x00},{0x3002, 0x1c},{0x3004, 0xff},{0x3006, 0xc3},
	{0x300e, 0x58},{0x302e, 0x00},{0x4300, 0x30},{0x501f, 0x00},{0x4713, 0x03},
	{0x4407, 0x04},{0x460b, 0x35},{0x460c, 0x22},{0x3824, 0x02},{0x5000, 0xa7},
	{0x5001, 0xa3},{0x5180, 0xff},{0x5181, 0xf2},{0x5182, 0x00},{0x5183, 0x14},
	{0x5184, 0x25},{0x5185, 0x24},{0x5186, 0x09},{0x5187, 0x09},{0x5188, 0x09},
	{0x5189, 0x75},{0x518a, 0x54},{0x518b, 0xe0},{0x518c, 0xb2},{0x518d, 0x42},
	{0x518e, 0x3d},{0x518f, 0x56},{0x5190, 0x46},{0x5191, 0xf8},{0x5192, 0x04},
	{0x5193, 0x70},{0x5194, 0xf0},{0x5195, 0xf0},{0x5196, 0x03},{0x5197, 0x01},
	{0x5198, 0x04},{0x5199, 0x12},{0x519a, 0x04},{0x519b, 0x00},{0x519c, 0x06},
	{0x519d, 0x82},{0x519e, 0x38},{0x5381, 0x1c},{0x5382, 0x5a},{0x5383, 0x06},
	{0x5384, 0x0a},{0x5385, 0x7e},{0x5386, 0x88},{0x5387, 0x7c},{0x5388, 0x6c},
	{0x5389, 0x10},{0x538a, 0x01},{0x538b, 0x98},{0x5300, 0x08},{0x5301, 0x30},
	{0x5302, 0x10},{0x5303, 0x00},{0x5304, 0x08},{0x5305, 0x30},{0x5306, 0x08},
	{0x5307, 0x16},{0x5309, 0x08},{0x530a, 0x30},{0x530b, 0x04},{0x530c, 0x06},
	{0x5480, 0x01},{0x5481, 0x08},{0x5482, 0x14},{0x5483, 0x28},{0x5484, 0x51},
	{0x5485, 0x65},{0x5486, 0x71},{0x5487, 0x7d},{0x5488, 0x87},{0x5489, 0x91},
	{0x548a, 0x9a},{0x548b, 0xaa},{0x548c, 0xb8},{0x548d, 0xcd},{0x548e, 0xdd},
	{0x548f, 0xea},{0x5490, 0x1d},{0x5580, 0x02},{0x5583, 0x40},{0x5584, 0x10},
	{0x5589, 0x10},{0x558a, 0x00},{0x558b, 0xf8},{0x5800, 0x23},{0x5801, 0x15},
	{0x5802, 0x10},{0x5803, 0x10},{0x5804, 0x15},{0x5805, 0x23},{0x5806, 0x0c},
	{0x5807, 0x08},{0x5808, 0x05},{0x5809, 0x05},{0x580a, 0x08},{0x580b, 0x0c},
	{0x580c, 0x07},{0x580d, 0x03},{0x580e, 0x00},{0x580f, 0x00},{0x5810, 0x03},
	{0x5811, 0x07},{0x5812, 0x07},{0x5813, 0x03},{0x5814, 0x00},{0x5815, 0x00},
	{0x5816, 0x03},{0x5817, 0x07},{0x5818, 0x0b},{0x5819, 0x08},{0x581a, 0x05},
	{0x581b, 0x05},{0x581c, 0x07},{0x581d, 0x0b},{0x581e, 0x2a},{0x581f, 0x16},
	{0x5820, 0x11},{0x5821, 0x11},{0x5822, 0x15},{0x5823, 0x29},{0x5824, 0xbf},
	{0x5825, 0xaf},{0x5826, 0x9f},{0x5827, 0xaf},{0x5828, 0xdf},{0x5829, 0x6f},
	{0x582a, 0x8e},{0x582b, 0xab},{0x582c, 0x9e},{0x582d, 0x7f},{0x582e, 0x4f},
	{0x582f, 0x89},{0x5830, 0x86},{0x5831, 0x98},{0x5832, 0x6f},{0x5833, 0x4f},
	{0x5834, 0x6e},{0x5835, 0x7b},{0x5836, 0x7e},{0x5837, 0x6f},{0x5838, 0xde},
	{0x5839, 0xbf},{0x583a, 0x9f},{0x583b, 0xbf},{0x583c, 0xec},{0x5025, 0x00},
	{0x3a0f, 0x30},{0x3a10, 0x28},{0x3a1b, 0x30},{0x3a1e, 0x26},{0x3a11, 0x60},
	{0x3a1f, 0x14},{0x3008, 0x02},
};

static struct OV_RegValue VGA_RegValue[] = 
{	
	{0x3035, 0x11},{0x3036, 0x69},{0x3C07, 0x07},{0x3820, 0x41},{0x3821, 0x07},
	{0x3814, 0x31},{0x3815, 0x31},{0x3800, 0x00},{0x3801, 0x00},{0x3802, 0x00},
	{0x3803, 0x00},{0x3804, 0x0a},{0x3805, 0x3f},{0x3806, 0x07},{0x3807, 0x9f},
	{0x3808, 0x02}, // width
	{0x3809, 0x80},
	{0x380A, 0x01}, // height
	{0x380B, 0xE1},{0x380C, 0x0B},{0x380D, 0x1C},{0x380E, 0x07},{0x380F, 0x9F},
	{0x3810, 0x00},{0x3811, 0x10},{0x3812, 0x00},{0x3813, 0x06},{0x3618, 0x00},
	{0x3612, 0x29},{0x3708, 0x64}, //{0x3708, 0x62},
	{0x3709, 0x52},{0x370C, 0x03},
	{0x3A02, 0x03}, //{0x3A02, 0x02},
	{0x3A03, 0xd8}, //{0x3A03, 0xe4},
	{0x3A0E, 0x01},							   
	{0x3A0D, 0x04}, //{0x3A0D, 0x02},
	{0x3A14, 0x03}, //{0x3A14, 0x02},
	{0x3A15, 0xd8}, //{0x3A15, 0xe4},
	{0x4004, 0x02},
	{0x4713, 0x03}, //{0x4713, 0x02},
	{0x4407, 0x04},
	{0x460B, 0x35}, //{0x460B, 0x37},
	{0x460C, 0x22}, //{0x460C, 0x20},
	{0x3824, 0x02}, //{0x3824, 0x04},
	{0x5001, 0xa3},{0x5180, 0xff},{0x5181, 0xf2},{0x5182, 0x00},{0x5183, 0x14},
  {0x5184, 0x25},{0x5185, 0x24},{0x5186, 0x09},{0x5187, 0x09},{0x5188, 0x09},
	{0x5189, 0x75},{0x518a ,0x54},{0x518b, 0xe0},{0x518c, 0xb2},{0x518d, 0x42},
	{0x518e, 0x3d},{0x518f, 0x56},{0x3008, 0x02},{0x3035, 0x31},{0x3821, 0x07},
	{0x3002, 0x1c},{0x3006, 0xc3},{0x4713, 0x02},{0x4407, 0x04},{0x460b, 0x37},
	{0x460c, 0x20},{0x3824, 0x04},{0x4003, 0x08}, 
	// Gamma
	{0x5481, 0x0F},{0x5482, 0x1E},{0x5483, 0x3A},{0x5484, 0x62},{0x5485, 0x74},
	{0x5486, 0x82},{0x5487, 0x8E},{0x5488, 0x98},{0x5489, 0xA0},{0x548a, 0xA7},
  {0x548b, 0xB5},{0x548c, 0xC0},{0x548d, 0xD2},{0x548e, 0xE1},{0x548f, 0xED},
	{0x5490, 0x19},
	// Color Matrix
	{0x5381, 0x1c},{0x5382, 0x5a},{0x5383, 0x06},{0x5384, 0x20},{0x5385, 0x80},
	{0x5386, 0xa0},{0x5387, 0xa2},{0x5388, 0xa0},{0x5389, 0x02},{0x538b, 0x98},
	{0x538a, 0x01},
	// Saturation
	{0x5001, 0xa3},{0x5583, 0x30},{0x5584, 0x30},{0x5580, 0x02},{0x5588, 0x41},
	// AEC
	{0x3a0f, 0x40},{0x3a10, 0x38},{0x3a11, 0x71},{0x3a1b, 0x40},{0x3a1e, 0x38},
	{0x3a1f, 0x10},
	// AEC Weight
//	{0x5688, 0x11}, // Zone 1/Zone 0 weight
//	{0x5689, 0x11}, // Zone 3/Zone 2 weight
//	{0x569a, 0x31}, // Zone 5/Zone 4 weight
//	{0x569b, 0x13}, // Zone 7/Zone 6 weight
//	{0x569c, 0x31}, // Zone 9/Zone 8 weight
//	{0x569d, 0x13}, // Zone b/Zone a weight
//	{0x569e, 0x11}, // Zone d/Zone c weight
//	{0x569f, 0x11}, // Zone f/Zone e weight
};

/************  I2C  *****************/
static struct i2c_client *save_client;
static char sensor_inited = 0;

static int sensor_read(u16 reg,u8 *val)
{
	int ret;
	/* We have 16-bit i2c addresses - care for endianess */
	unsigned char data[2] = { reg >> 8, reg & 0xff };

	ret = i2c_master_send(save_client, data, 2);
	if (ret < 2) {
		dev_err(&save_client->dev, "%s: i2c read error, reg: 0x%x\n",
			__func__, reg);
		return ret < 0 ? ret : -EIO;
	}

	ret = i2c_master_recv(save_client, val, 1);
	if (ret < 1) {
		dev_err(&save_client->dev, "%s: i2c read error, reg: 0x%x\n",__func__, reg);
		return ret < 0 ? ret : -EIO;
	}
	return 0;
}

static int sensor_write(u16 reg, u8 val)
{
	int ret;
	unsigned char data[3] = { reg >> 8, reg & 0xff, val };

	ret = i2c_master_send(save_client, data, 3);
	if (ret < 3) {
		dev_err(&save_client->dev, "%s: i2c write error, reg: 0x%x\n",
			__func__, reg);
		return ret < 0 ? ret : -EIO;
	}

	return 0;
}

static int sensor_probe(struct i2c_client *client,const struct i2c_device_id *did)
{
	ENTRY();
	sensor_inited = 1;
	client->flags = I2C_CLIENT_SCCB;
	save_client = client;
	LEAVE();
	return 0;
}
static int sensor_remove(struct i2c_client *client)
{	
	ENTRY();
	LEAVE();
	return 0;
}

static int ov5640_init(struct nuvoton_vin_device* cam)
{
	int err = 0;
	ENTRY();
	LEAVE();		
	return err;
}

static struct nuvoton_vin_sensor ov5640 = {
	.name = "ov5640",
	.init = &ov5640_init,
	.infmtord = (INORD_YUYV | INFMT_YCbCr | INTYPE_CCIR601),
	.polarity = (VSP_HI | HSP_LO | PCLKP_HI),
	.cropstart = ( 1 | 0<<16 ), /*( Vertical | Horizontal<<16 ) */
	.cropcap = {
		.bounds = {
			.left = 0,
			.top = 0,
			.width = 640,
			.height = 480,
		},
		.defrect = {
			.left = 0,
			.top = 0,
			.width = 800,
			.height = 480,
		},
	},
	.pix_format	 = {
		.width = 640,
		.height = 480,
		.pixelformat = V4L2_PIX_FMT_YUYV,
		.priv = 16,
		.colorspace = V4L2_COLORSPACE_JPEG,
	},
};

int nuvoton_vin_probe(struct nuvoton_vin_device* cam)
{
	int i,j,ret = 0;
	__u8 SensorID[1];
	struct OV_RegValue *psRegValue;
	struct OV_RegValue *psRegValue1;
	ENTRY();	
	nuvoton_vin_attach_sensor(cam, &ov5640);
	
	// if i2c module isn't loaded at this time
	if(!sensor_inited)
		return -1;
	psRegValue=Init_RegValue;
	for(i=0;i<_REG_TABLE_SIZE(Init_RegValue); i++, psRegValue++)
	{
		int32_t ret;
		printk(".");		
		ret = sensor_write((psRegValue->uRegAddr), (psRegValue->uValue));
		if(psRegValue->uRegAddr==0x3008  && psRegValue->uValue==0x82)
		{
			for(j=0;j<0x20000;j++);
			VDEBUG("Delay A loop for Reset Device\n");
		}
		if(ret<0)
		{
			VDEBUG("Wrong to write register addr = 0x%x, write data = 0x%x , ret = %d\n", (psRegValue->uRegAddr), (psRegValue->uValue), ret);		
		}	
	} 	
	
	psRegValue1=VGA_RegValue;
	for(i=0;i<_REG_TABLE_SIZE(VGA_RegValue); i++, psRegValue++)
	{
		int32_t ret;
		printk(".");		
		ret = sensor_write((psRegValue1->uRegAddr), (psRegValue1->uValue));
		if(ret<0)
		{
			VDEBUG("Wrong to write register addr = 0x%x, write data = 0x%x , ret = %d\n", (psRegValue1->uRegAddr), (psRegValue1->uValue), ret);		
		}	
	} 	
	//----------Read sensor id-------------------------------------	        
	sensor_read(0x302A,SensorID);  /* Chip Version 0xB0 */			
	printk("Chip Version = 0x%02X(0xB0) \n", SensorID[0]);	
	//-------------------------------------------------------------		
	printk("\n");
	if(ret>=0)
		printk("driver i2c initial done\n");
	else
		printk("driver i2c initial fail\n");	
	LEAVE();		
	return ret;	
}

static const struct i2c_device_id sensor_id[] = {{ "ov5640", 0 },};
MODULE_DEVICE_TABLE(i2c, sensor_id);

static struct i2c_driver sensor_i2c_driver = {
	.driver = { .name  = "ov5640", 
				.owner = THIS_MODULE,
						},
	.probe    = sensor_probe,
	.remove   = sensor_remove,	
	.id_table = sensor_id,
};

module_i2c_driver(sensor_i2c_driver);
